A fire in an enclosed space burns with the aid of reflected radiation that preheats the fuel, making ignition much easier and (flames spreading) more quickly
A>
B> flame spreads
C> flames are caused to spread
D> causing flames to spread
E> causing spreading of the flames
从以上五个选项， 我们可以迅速判断，答案在 A 和D 之间（因为从语法上来说没有任何错误），这里，flame 到底是 make 的宾语那，还是另外一个动作那？
我们知道，无风不起浪，无ignition 也无 flame, 因此我们可以迅速判断，flame 不可能与 make 并列，而只能是make 的下一个结果，所以 D就选出来了
2 还可以从句子的意思出发
example 1
Many investors base their choices ( between bonds and stocks on comparing bond yields to ) the dividends available on common stocks
A>
C> between bonds and stocks on comparisons of bond yields with
E> between bonds and stocks on comparing bond yields with
扎一看，我们可能选E， 但是 further reflection reveals it deserve our attention.
Base…on… on 后面的肯定是一个结果，而comparing 是一个过程，显然不能满足其条件，所以只能用comparisons..
以上只是个人的心得体会，欢迎和大家交流作者: tongxun 时间: 2002-8-8 18:20
精辟！谢谢！作者: sunny 时间: 2002-8-16 18:15
简直是关键中的关键作者: primefang 时间: 2002-8-16 19:29
sunny 可有切身经历,道来一听?
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